Transactions and balances with related parties - Narrative (Details)	12 Months Ended
Dec. 31, 2025
Disclosure of transactions between related parties [abstract]
Threshold percentage for disclosure of related party transactions, individual ownership of any class of securities	10.00%

Threshold percentage for disclosure of related party transactions, individual ownership of any class of securities. Transactions with percentages of holdings greater than the threshold percentages are disclosed among the related party transactions.

No definition available.

Name:	jmia_ThresholdPercentageForDisclosureOfRelatedPartyTransactionsIndividualOwnershipOfAnyClassOfSecurities
Namespace Prefix:	jmia_
Data Type:	dtr-types1:percentItemType
Balance Type:	na
Period Type:	duration